Ecology, biodiversiy, population dynamics, demography, dispersal, demography, spatial ecology, conservation biology, biostatics, modeling
Invited talks and seminars • Skarpaas, O. 2006. Transportens betydning for natur og landskap. CIENS Workshop on sustainable mobility. Oslo Centre for Interdisciplinary Environmental and Social Research, Nov. 2, 2006. • Skarpaas, O., Jongejans, E. & Shea, K. 2006. Dispersal patterns, dispersal mechanisms and invasion wave speeds for Carduus thistles. BES Annual Meeting, University of Oxford, Sep 5-7, 2006. • Skarpaas, O. 2005. Global change and the spatial dynamics of plants: linking local population dynamics and dispersal. University of Bergen, Sep 30, 2005. • Skarpaas, O. 2005. Plant traits, environmental variability and wind dispersal near and far: implications for spatial population dynamics. Utrecht University, Apr 7, 2005. • Skarpaas, O. 2003. Process noise and observation error in population ecology. Ecology seminar series, The Pennsylvania State University, Oct 22, 2003. • Skarpaas, O. 2003. Long-term trends in regional abundance: statistical assessment using scientific collections. Population Dynamics seminar series, University of Oslo, Mar 15, 2003. • Skarpaas, O. 2002. Fra økologisk teori til praktiske prinsipper for vern og forvaltning av sjeldne arter. Norwegian Botanical Society meeting, Nov 6, 2002. • Skarpaas, O. 2002. Analyse av langtidstrender i antall forekomster for plantearter: ett eksempel på hva herbariedatabasen kan brukes til. Botany seminar, Botanical Garden and Museum, Oslo, spring 2002. Contributed oral presentations and posters • Kausrud, K.L., Økland, B., Skarpaas, O., Stenseth, N.C., Erbilgin, N. 2007. Spatiotemporal dynamics of invasive bark beetles: modeling dispersal strategies. USDA Interagency Research Forum on Gypsy Moth and other Invasive Species, Annapolis, Maryland, Jan 9-12, 2007. • Jongejans, E., Pedatella, N., Shea, K., Skarpaas, O., Auhl, R. & Isard, S. 2006. Seed release from invasive thistles. 91st Annual Meeting of the Ecological Society of America, Memphis, Tennessee, Aug 6-11, 2006. • Økland, B., Skarpaas, O., Kausrud, K. & Stenseth, N.C. 2006. Spatiotemporal dynamics of introduced bark beetles. IUFRO Working Party 7.03.12 on Alien Invasive Species and International Trade, Radom, Poland, Jul 2-7, 2006. • Skarpaas, O., Jongejans, E. & Shea, K., 2006. Invasion of Carduus thistles in America: seed dispersal, spread patterns and the role of human activities. Ecology in an Era of Globalization. Ecological Society of America International Conference, Merida, Yucatan, Mexico, Jan 8-12, 2006. • Skarpaas, O. & Shea, K. 2005. Dispersal measurement and modeling for invasive species: sampling affects estimates of spatial spread. 90th Annual Meeting of the Ecological Society of America and IX International Congress of Ecology, Montreal, Canada, Aug 8-12, 2005. • Skarpaas, O. 2005. Dispersal measurement and modeling for wind-dispersed invasives: causes and consequences of variability in dispersal near and far. Northeast Ecology and Evolution Conference, The Pennsylvania State University, State College, Pennsylvania, Mar 18-20, 2005. • Chen, Y-C.P. & Skarpaas, O. 2005. Can mechanistic models accurately predict seed dispersal patterns of Carduus acanthoides and Carduus ntuans? Northeast Ecology and Evolution Conference, The Pennsylvania State University, State College, Pennsylvania, Mar 18-20, 2005. • Shea, K., Skarpaas, O. & Bullock, J.M. 2004. Optimization of dispersal study design. Workshop on Mathematical models for Biological Invasions, Banff International Research Station, Banff, Canada, Nov 27 - Dec 2, 2004. • Skarpaas, O. & Shea, K. 2004. Seed dispersal measurement and modeling: comparing Eulerian and Lagrangian sampling approaches. 89th Annual Meeting of the Ecological Society of America, Portland, Oregon, Aug 1-6, 2004. • Skarpaas, O. 2004. Population viability analysis using scientific collections: dealing with uncertainty. Society for Conservation Biology, Columbia University, New York, Jul 30 - Aug 2, 2004. • Dauer, J.T., Skarpaas, O. & Mortensen, D. 2004. Assessing long-distance dispersal. Annual Meeting of the North Eastern Weed Science Society, Jan 5-8, 2004. • Skarpaas, O., Shea, K. & Bullock, J.M. 2003. Dispersal experiment design for Musk thistle (Carduus nutans): optimal seed trapping design for point sources. 7th International Conference on the Ecology and Management of Alien Plant Invasions, Fort Lauderdale, Florida, Nov 3-8, 2003. • Skarpaas, O. 2003. Applying the theoretical framework of metapopulation theory to long-lived sessile organisms: is it valid? Dr. scient. trial lecture, University of Oslo, Feb 3, 2003. • Skarpaas, O. 2002. Spatial population dynamics: the formation of spatial patterns in abundance and demography through ecological interactions. Departmental seminar, Dept. of Biology, University of Oslo, Dec, 2002. • Bjureke, K., Skarpaas, O. & Stabbetorp, O.E. 2002. Do old paths serve as dispersal corridors for grassland plant species? Results from a botanical study of small settlements in a forested area in SE Norway. 20th Session of the Permanent European Conference for the Study of the Rural Landscape, Tartu and Otepaa, Estonia, Aug 25 - Sep 1, 2002. • Skarpaas, O. & Stabbetorp, O.E. 2002. Survival, growth and reproduction of Mertensia maritima: Effects of size, age and environment. 87th Annual Meeting of the Ecological Society of America, Tucson, Arizona, Aug 4-9, 2002. • Skarpaas, O., Stabbetorp, O.E. & Often, A. 2001. Landskapsendring og populasjonsdynamikk - en studie av enghaukeskjegg. Nordisk forskerseminar om gjengroing av kulturmark, Sogndal, Norway, Sep. 15-18, 2001. • Skarpaas, O. 2000. Measuring and modeling dispersal in Crepis praemorsa. NorFA Course: Metapopulations in plants - implications for conservation biology, Oulanka, Finland, Oct 10-13, 2000. • Stabbetorp, O.E., Skarpaas, O., Nordal, I., Byre, A. Friis, H. 2000. Genetic variability on the edge: a comparison of the dynamics of three shoreline species in the Oslo Fjord Region, SE Norway. British Ecological Society Special Symposium, Royal Holloway College, University of London, Aug 29, 2000. • Skarpaas, O. 1997. Compatibility systems and plant metapopulation dynamics. 11th meeting of the Scandinavian Association of Pollination Ecology, Tjarnö Marine Biological Laboratory, Strömstad, Sweden, Nov. 7-9, 1997.
• 2004-05 Program committee member, Northeast Ecology and Evolution Conference (NEEC 2005) • 2004 Organized a series of meetings on dispersal at The Pennsylvania State University • 2001-02 Departmental governing board member, Department of Biology, University of Oslo • 2001-02 Governing board member, Norwegian Association of Biologists (BIO) • 2001 Organizing committee member BIO Conference 2001 • 1996 Governing board member, Kulturøkologene